Scratch

scmb1 · 2010-02-14 13:03:00

Sometimes it is necessary for a variable to show a lot of decimals. (For example, if the point of your project is to find pi, you don't want the variable to round to 3.1 or 3.14). Unfortunately, Scratch doesn't give an option of how many places to round to and often round to only 1 or 2 decimal places. I have found a way around this! If you use a join block with your variable, it will show quite a few more places. There does not even have to be anything in the other half of the join block.

Example:

I hope that makes sense and that it helps you!

Last edited by scmb1 (2010-02-14 19:10:13)

greenflash · 2010-02-14 13:55:45

That's really strange, but quite cool! I'm goin to try it now! smile

Paddle2See · 2010-02-14 14:02:58

Oh, very cool find! Very handy - thanks smile

RHY3756547 · 2010-02-14 14:11:01

yikes Ingenious.
This is very useful. Thanks!

Lucario621 · 2010-02-14 14:40:29

Awesome!

The-Whiz · 2010-02-14 14:56:29

Nice find!

juststickman · 2010-02-14 15:04:50

Wow, I'm going to need this!

technoguyx · 2010-02-14 15:29:23

Nice, I've never needed more than 2 decimal spots but still, it might be useful sometime smile

Ace-of-Spades · 2010-02-14 16:49:15

There's no pi in scratch.. is there?

Well if you want to be accurate, all you need is 3.141. It's not like a one-thousandth of a decimal place will ever help you.

scmb1 · 2010-02-14 17:09:26

Ace-of-Spades wrote:
There's no pi in scratch.. is there?

Well if you want to be accurate, all you need is 3.141. It's not like a one-thousandth of a decimal place will ever help you.

I was just making an example of when you would want a more accurate variable. If the point of your project was to find a lot of digits of pi, you wouldn't want the variable to always round to a digit or 2. There are lots of of other situations too, not just that.

Last edited by scmb1 (2010-02-14 17:10:16)

Ace-of-Spades · 2010-02-14 18:11:31

Haven't you ever heard of significant digits? It's marks off in high school if you have more than 2 after the decimal point (or 3 in Chemistry)

scmb1 · 2010-02-14 18:29:09

Ace-of-Spades wrote:
Haven't you ever heard of significant digits? It's marks off in high school if you have more than 2 after the decimal point (or 3 in Chemistry)

Yes, I've heard of significant digits...

If you don't find this useful, then don't use it.

Last edited by scmb1 (2010-02-14 18:29:24)

Chrischb · 2010-02-15 01:22:15

Wow! I always used lists. tongue

Jonathanpb · 2010-02-15 01:33:33

This is brilliant! Thanks, scmb1! big_smile

Lucario621 · 2010-02-15 08:40:59

Ace-of-Spades wrote:
There's no pi in scratch.. is there?

Well if you want to be accurate, all you need is 3.141. It's not like a one-thousandth of a decimal place will ever help you.

To be accurate you need 3.14159265 tongue Or 3.756547 XD

Ace-of-Spades · 2010-02-15 08:57:26

Lucario621 wrote:
Ace-of-Spades wrote:
There's no pi in scratch.. is there?

Well if you want to be accurate, all you need is 3.141. It's not like a one-thousandth of a decimal place will ever help you.
To be accurate you need 3.14159265 Or 3.756547 XD

You're not old enough for architecture or engineering desgin class, so how would you know?

aliceteaparty · 2010-04-13 14:37:24

Hiya - Great work-around - thank-you.
BTW:
1. You need to click on the join block after you insert it to "activate" it.
2. Better to put variable V in first block and 1 blank space in second block.
3. You can get exactly N decimals by using: round( V * 10^N ) / 10^N
---
Also, I did notice that without work-around:
If I share or embed I automatically get more decimal places in the display.
However, if I just present, I only get the 1 decimal point which is not enough and have to use this cool but rather awkward work around (I want my students to program.)
Any new developments here expected in newer version?
---
Again MANY THANKS!

scmb1 · 2010-04-13 17:12:05

aliceteaparty wrote:
Hiya - Great work-around - thank-you.
BTW:
1. You need to click on the join block after you insert it to "activate" it.
2. Better to put variable V in first block and 1 blank space in second block.
3. You can get exactly N decimals by using: round( V * 10^N ) / 10^N
---
Also, I did notice that without work-around:
If I share or embed I automatically get more decimal places in the display.
However, if I just present, I only get the 1 decimal point which is not enough and have to use this cool but rather awkward work around (I want my students to program.)
Any new developments here expected in newer version?
---
Again MANY THANKS!

No problem! And thanks for sharing your discoveries! Sorry, but I don't know if there are any plans to change the decimal rounding in 2.0...

Samueldora · 2010-05-16 05:06:13

Hi scmb1!

This was exactly what I needed for a project. Thank you very much for sharing this trick.

smile

Samueldora

scmb1 · 2010-05-16 15:28:02

Samueldora wrote:
Hi scmb1!

This was exactly what I needed for a project. Thank you very much for sharing this trick.

Samueldora

No problem!

coolstuff · 2010-05-16 15:28:57

Very helpful! I've never really needed to have a lot of decimal places, but this is helpful should that day ever come smile

Last edited by coolstuff (2010-05-16 15:29:47)

Scratch

archived forums

#1 2010-02-14 13:03:00

A discovery! How to make more decimals show in the variables.

#2 2010-02-14 13:55:45

Re: A discovery! How to make more decimals show in the variables.

#3 2010-02-14 14:02:58

Re: A discovery! How to make more decimals show in the variables.

#4 2010-02-14 14:11:01

Re: A discovery! How to make more decimals show in the variables.

#5 2010-02-14 14:40:29

Re: A discovery! How to make more decimals show in the variables.

#6 2010-02-14 14:56:29

Re: A discovery! How to make more decimals show in the variables.

#7 2010-02-14 15:04:50

Re: A discovery! How to make more decimals show in the variables.

#8 2010-02-14 15:29:23

Re: A discovery! How to make more decimals show in the variables.

#9 2010-02-14 16:49:15

Re: A discovery! How to make more decimals show in the variables.

#10 2010-02-14 17:09:26

Re: A discovery! How to make more decimals show in the variables.

Ace-of-Spades wrote:

#11 2010-02-14 18:11:31

Re: A discovery! How to make more decimals show in the variables.

#12 2010-02-14 18:29:09

Re: A discovery! How to make more decimals show in the variables.

Ace-of-Spades wrote:

#13 2010-02-15 01:22:15

Re: A discovery! How to make more decimals show in the variables.

#14 2010-02-15 01:33:33

Re: A discovery! How to make more decimals show in the variables.

#15 2010-02-15 08:40:59

Re: A discovery! How to make more decimals show in the variables.

Ace-of-Spades wrote:

#16 2010-02-15 08:57:26

Re: A discovery! How to make more decimals show in the variables.

Lucario621 wrote:

Ace-of-Spades wrote:

#17 2010-04-13 14:37:24

Re: A discovery! How to make more decimals show in the variables.

#18 2010-04-13 17:12:05

Re: A discovery! How to make more decimals show in the variables.

aliceteaparty wrote:

#19 2010-05-16 05:06:13

Re: A discovery! How to make more decimals show in the variables.

#20 2010-05-16 15:28:02

Re: A discovery! How to make more decimals show in the variables.

Samueldora wrote:

#21 2010-05-16 15:28:57

Re: A discovery! How to make more decimals show in the variables.

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